to expend money with the expectation of achieving a profit or material result by putting it into financial schemes, shares, or property, or by using it to develop a commercial venture:
Now that you know the definition, you can begin to understand the basics. As mentioned above, you can invest in shares of stock, property, or other types of commerical ventures. The idea is to use your money to make more money in return and this is where you must pick your route. I will present many possible routes but as an invester, it is your job to do the research.